From ebfdd05311a311a33f16e53f40f872c5b9e931c5 Mon Sep 17 00:00:00 2001
From: nicktrn <55853254+nicktrn@users.noreply.github.com>
Date: Wed, 8 Apr 2026 21:43:53 +0100
Subject: [PATCH] feat(webapp): set application_name on prisma connections from
 SERVICE_NAME

---
 .server-changes/prisma-application-name.md | 6 ++++++
 apps/webapp/app/db.server.ts               | 2 ++
 2 files changed, 8 insertions(+)
 create mode 100644 .server-changes/prisma-application-name.md

diff --git a/.server-changes/prisma-application-name.md b/.server-changes/prisma-application-name.md
new file mode 100644
index 00000000000..825058f3b34
--- /dev/null
+++ b/.server-changes/prisma-application-name.md
@@ -0,0 +1,6 @@
+---
+area: webapp
+type: improvement
+---
+
+Set `application_name` on Prisma connections from SERVICE_NAME so DB load can be attributed by service
diff --git a/apps/webapp/app/db.server.ts b/apps/webapp/app/db.server.ts
index 47b67a1a406..4668b58fb02 100644
--- a/apps/webapp/app/db.server.ts
+++ b/apps/webapp/app/db.server.ts
@@ -113,6 +113,7 @@ function getClient() {
     connection_limit: env.DATABASE_CONNECTION_LIMIT.toString(),
     pool_timeout: env.DATABASE_POOL_TIMEOUT.toString(),
     connection_timeout: env.DATABASE_CONNECTION_TIMEOUT.toString(),
+    application_name: env.SERVICE_NAME,
   });
 
   console.log(`🔌 setting up prisma client to ${redactUrlSecrets(databaseUrl)}`);
@@ -236,6 +237,7 @@ function getReplicaClient() {
     connection_limit: env.DATABASE_CONNECTION_LIMIT.toString(),
     pool_timeout: env.DATABASE_POOL_TIMEOUT.toString(),
     connection_timeout: env.DATABASE_CONNECTION_TIMEOUT.toString(),
+    application_name: env.SERVICE_NAME,
   });
 
   console.log(`🔌 setting up read replica connection to ${redactUrlSecrets(replicaUrl)}`);